Search found 148 matches

by Patrice Duhamel
Mon Jul 08, 2019 9:08 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Linux flavors - opinions
Replies: 29
Views: 8515

Re: Linux flavors - opinions

I think you can do what you want with any Linux distribution.

I prefer to use Linux Mint Cinnamon.
by Patrice Duhamel
Mon Jul 08, 2019 8:59 pm
Forum: Computer Chess Club: General Topics
Topic: Cheese 2.1
Replies: 18
Views: 3826

Cheese 2.1

I released Cheese 2.1 : http://cheesechess.free.fr/en/download.html This is a bug fix version, maybe few ELO improvement. - fix initialization of UCI Strength in .ini file - fix FEN parsing with FRC castling rights - fix few problems with threads - rewrite UCI & Xboard protocols code - small optimiz...
by Patrice Duhamel
Sat Jul 06, 2019 10:29 am
Forum: Computer Chess Club: General Topics
Topic: UCI_Elo
Replies: 63
Views: 17650

Re: UCI_Elo

Any advice to tune engine parameters to correspond to the right UCI_Elo value ?

In Cheese I have 2 parameters, one to make very small pauses every N nodes,
and another one to add randomness to the evaluation under 2000 ELO.
by Patrice Duhamel
Sat Dec 15, 2018 10:04 am
Forum: Computer Chess Club: General Topics
Topic: Cheese 2.0
Replies: 6
Views: 1702

Cheese 2.0

Cheese 2.0 is available : http://cheesechess.free.fr/en/download.html Changes : - add multi processor support (YBWC) - new opening book format - add contempt factor - add benchmark option - add personality option - add a parameter to reduce engine speed - add Late Move Pruning - remove bonus for que...
by Patrice Duhamel
Sat Apr 21, 2018 4:15 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: More questions about threads
Replies: 8
Views: 1817

Re: More questions about threads

jdart wrote: However: like the Stockfish team has done, I am shifting over to using LazySMP now, because YBWC gave poor scaling on large core counts such as TCEC is using.
And with less cores (2,4,8), LazySMP is also better than YBWC ?

I will try to look at ABDADA and LazySMP later.
by Patrice Duhamel
Sat Apr 21, 2018 10:29 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: More questions about threads
Replies: 8
Views: 1817

Re: More questions about threads

syzygy wrote: Only way is play games and compare Elo.
Yes, but it takes more time to play games, I was looking for something faster, to run tests and confirm later with games.
by Patrice Duhamel
Sat Apr 21, 2018 10:25 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: More questions about threads
Replies: 8
Views: 1817

Re: More questions about threads

smatovic wrote: e.g., mean of 4 runs of time to depth on Hyatt24 positions with variable depth:
I will try this.
by Patrice Duhamel
Sat Apr 21, 2018 9:25 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: More questions about threads
Replies: 8
Views: 1817

More questions about threads

YBWC is working in Cheese and I have more questions. For YBWC I have almost the same implementation as Stockfish 6 but without the late join, the main hash table is shared (lockless) and each thread have a pawn hash table, history and killers tables. The engine create N-1 threads and the main thread...